# Print output for @column tags ?>
Developers

- Design
- Develop
- Distribute

Developer Console

## Most visited

## Recently visited

## Results for

# ZoomButtonsController.OnZoomListener

`public static interface ZoomButtonsController.OnZoomListener`
``

android.widget.ZoomButtonsController.OnZoomListener

Interface that will be called when the user performs an interaction that triggers some action, for example zooming.

## Summary

### Public methods
`abstract void` | `onVisibilityChanged(boolean visible)` Called when the zoom controls' visibility changes.
`abstract void` | `onZoom(boolean zoomIn)` Called when the owner view needs to be zoomed.

## Public methods

### onVisibilityChanged

    public abstract void onVisibilityChanged (boolean visible)

Called when the zoom controls' visibility changes.

Parameters
`visible` | `boolean`: Whether the zoom controls are visible.

### onZoom

    public abstract void onZoom (boolean zoomIn)

Called when the owner view needs to be zoomed.

Parameters
`zoomIn` | `boolean`: The direction of the zoom: true to zoom in, false to zoom out.

Full name *
Email address *
Company / developer name
One of your Play Store app URLs *
Which best describes your business:*
Apps
Games
Apps & Games
*
*